hypersomnia

Also known as primary recurrent hypersomnia, persistent disorder of initiating or maintaining wakefulness, recurrent hypersomnia, hypersomnolence disorder, Disorders of Excessive Somnolence

Hypersomnia is a neurological disorder of excessive time spent sleeping or excessive sleepiness. It can have many possible causes (such as seasonal affective disorder) and can cause distress and problems with functioning. In the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), hypersomnolence, of which there are several subtypes, appears under sleep-wake disorders.

Key facts

Medical condition (new).image: "Plenty of sleep keeps him on the job" - NARA - 514792.jpg
Medical condition (new).caption: World War II poster issued by the US government
Medical condition (new).field: Psychiatry, neurology, sleep medicine
Medical condition (new).synonyms: Hypersomnolence

via Wikipedia infobox

Research

11,030 papers

via PubMed

Wikidata facts

Image: Sleeping while studying.JPG

Sources (3)

Article

20 sections

Contents

Symptoms
Diagnosis
Differential diagnosis
Primary hypersomnias
Primary hypersomnia mimics
Secondary hypersomnias
Posttraumatic hypersomnias
Recurrent hypersomnias
Assessment tools
Polysomnography
Multiple sleep latency test (MSLT)
Actigraphy
The maintenance of wakefulness test (MWT)
The Stanford sleepiness scale (SSS)
The Epworth sleepiness scale (ESS)
Treatment
Epidemiology
See also
References
External links

Hypersomnia is a pathological state characterized by a lack of alertness during the waking episodes of the day. It is not to be confused with fatigue, which is a normal physiological state. Daytime sleepiness appears most commonly during situations where little interaction is needed.